Improvement in sash-holders



UNITED STATES PATENT OFFICE.

GEORGE W. BISHOP, OF SARATOGA SPRINGS, NEW, YORK.

IMPROVEMENT IN sAsH-HOLDERS.

Specification forming part of Letters Patent N0.10S,438, dated October 1S, 1870.

To all whomrzt may concern.-

Be it known that I, GEORGE W. BIsHor, of Saratoga Springs, in the county of Saratoga and State of N ew York, have invented a new and valuable Improvement in Window-Sash Fastenings; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawings, making a partof this specification, and to the letters and iigures of reference marked thereon.

Figure 1 of the drawings is a representation of a vertical section of a window stile and jamb with my apparatus attached. Fig. 2 is a front View of the j amb with my apparatus attached. Figs. 3, 4, 5, 6, and 7 are details.

My invention relates to means for adjusting and locking the upper sash of a window 5 and it consists in the novel construction and arrangement of a locking apparatus arranged with the latch and spring, as herein particularly specified.

A of the drawings represents the upper sash of a window, and B the jamb of the frame.

O represents a plate attached to the windowj amb by means of screws in the openings a a.

D and D represent ears or projections on the face of the plate C, between which the latch next mentioned is arranged.

E represents a latch pivoted to the plate C, as shown, the upper end or flange of which is adapted to pass into one of the openings or notches c of the window-sash.

G represents a spring arranged in the ear D', as shown, and operating against the inner side of the latch E.

It will be observed that the earD has a circular recess on its lower side corresponding to a similar recess on the top of the iiange of the latch. These recesses are formed for the operation of the cam-lock next described, and serve as indispensable adj uncts thereto. They are marked u and '0, respectively.

H represents what I call a cam-lock. It

consists of a round pin passing through the plate O, but formed in the shape of a halfround or semicircular arc inside the plate, adapted to work in the recesses last above men` tioned. I sometimes -construct this lock with a thumb-piece on its outer end, as shown on Fig. 3. Sometimes I dispense with such thumbpiece and form a slot in the end of the pin, as shown on Fig. 4, and I sometimes form the end of said pin with small openings, as shown on Fig. 5. The keys marked o and y, respectively, are adapted to opening the lock when constructed Without the thumb-piece.

In places where visitsare feared from burglars I recommend that the thumb-piece be dispensed with, and that the `lock be adapted to a key in either.of the forms shown and described.

The letter R is a bar extending from the side of the latch to aid in operating the same.

The lock I-I, in combination with the recesses u and fn, and with the locking-dog E, pivoted in the casing and held from the window by the spring G, when the same are constructed substantially as and for the purpose specified.

GEORGE W. BISHOP.

- Witnesses:

EDWARD P. MAsI, VILLETTE ANDEEsoN. 

